Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
va dam » van dam, va dao, va dau
dam tu » nam tu, cam tu, tam tu
vi cau » va cau, ve cau, di cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty nang xa hoi. hieu va dam tu ((va hanh) OR (va danh)) vi cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu va dam tu ((va hanh) OR (va danh)) vi cau tren".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu va dam tu ((va hanh) OR (va danh)) vi cau tren*.